Math Help
I have recently come across a free math website , the Khan Academy. It has detailed videos that cover everything from basic addition to Algebra to Calculus and even Physics. It could be used as a base curriculum or just a supplement to your current teachings.
If you’re looking for plenty of worksheets, lessons or teaching help then go to the Homeschool Math website. From there you have math at your fingertips. It has plenty of information to help with teaching and learning. Plus they have a great newsletter that has useful information on maths.

You might also be interested in these links:
http://math4allages.wordpress.com
http://math4allages.wordpress.com/2010/01/08/the-best-free-math-tutorial-website/